the top
A triangle.
This is true, by definition. Assume that there is a circle that passes through each vertex of a triangle. Then its centre, which we may call the circumcentre of the triangle, must be at an equal distance from each of the vertices because all of the points of the circle are at the same distance from this point.
They would be intersecting.
A triangle containing an obtuse angle is an obtuse triangle.
i don't get the joke. kidding. an equilateral triangle
A notch
The point of a triangle is called a vertex, same goes with rectangles and all other shapes with points.
you call it the PEAK
The pinnacle or acme.
When all three sides of a triangle are congruent, it is called an equilateral triangle.
The peak
The peak
i would call it a square
Since the intersection of the perpendicular bisectors of a triangle is the center of the inscribed circle (we call it the centroid of a triangle), the answer is no.
would call that a triangular pyramid.
hypotenuse
When the vertex is the highest point on the graph of a quadratic function, we call that a maximum. This occurs in a downward-opening parabola, where the vertex represents the peak value of the function. In contrast, if the vertex is the lowest point, it is referred to as a minimum.